Patent classifications
G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06K
GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
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7/00
Methods or arrangements for sensing record carriers,; e.g. for reading patterns;
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G06K7/10
by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
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G06K7/10009
sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
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G06K7/10118
the sensing being preceded by at least one preliminary step
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G06K7/10148
the step consisting of dynamically tuning the resonant circuit of the interrogation device that is emitting the interrogation signal, e.g. for impedance matching inside of the interrogation device
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